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This page is a translated version of the page Prerelease:Undertale and the translation is 2% complete.
Other languages:
English • ‎中文(中国大陆)‎ • ‎日本語 • ‎한국어
Other languages:
English • ‎中文(中国大陆)‎ • ‎日本語 • ‎한국어

This page details prerelease information and/or media for Undertale.

To do:

Starmen.net Reveal

On February 4th, 2013, Toby posted a joke reply in a friend's forum thread on Starmen.net, in which he claimed to be working on a sequel to the (likely also a joke) EarthBound hack UnderBound, titled UnderBound 2. The images and music shown were, in reality, from an early version of Undertale, and feature several differences from their final versions.

TestMonster? All I see are Froggits!

The image on the right shows the earliest revealed screenshot of the game. While most of it looks similar to how the final game looks, the options at the bottom are different, with a "Talk" choice instead of "Act", "Spare" instead of "Mercy", and a "Spell" option that's not in the final (its graphics are present but unused, however). No visible LV meter has been implemented. The Froggit enemies are called "TestMonster", and the spots on its chest are slightly different than the final's.

Look at 'em go!

Frisk 原来有黑出线和更暗的头发和鞋. 在最终游戏里,更改成了亮棕色.

Pre-release Final

The regular battle theme, "Enemy Approaching", was one of the earliest tracks written for the game. The version from the PK Hack thread is slightly incomplete, notably missing the outro the final has and the beep-y instrument from 0:21 on.

(Source: PK Hack (archive))
Pre-release Final
More likely to break a bone than a fall. A (flower) bed fit for a queen.

Compared to the final, the early version has blockier graphics. LV is next to the player's name, and there is an extra stat EN, which Toby says stands for English, though more likely stands for Energy, which is a unused stat in the demo's code.

(Source: @tobyfox)
Pre-release Final
I'm sure a lot of people would've quit the game here. Better.

Dated April 5th, 2013 (one month before the demo release), this leaf puzzle was made a bit easier in the final version. Other parts of the ruins were also lacking markings or cracks on the ground at this point.

(Source: @tobyfox)

oh god no

Toby testing stuff out (February 8th, 2013). The font used is wider than in the final.

(Source: @tobyfox)

All I said was "snails"...

Happy Toriel with no horns. The original Boss Monster design lacked horns, but they were added because Toby felt it made them look too much like mimigas from Cave Story (a noted inspiration).

(Source: @tobyfox)

it's not like i killed anyone or anything

Sad Toriel with no horns.

(Source: @tobyfox)

Mettaton Essay

On Toby Fox's twitter, he notes that at one point, Mettaton would save your essay to the hard drive as an image, but it was buggy, and thus was removed.

Bandcamp Demo Soundtrack Differences

To do:
  • The "Start Menu" combines four tracks into one for some reason. Split this track up and compare it to the unused "Start Menu" tracks in the demo.
  • The final game's Bandcamp soundtrack has differences in it as well.

The demo's soundtrack on Bandcamp features a few musical differences compared to the demo.

Fallen Down

Bandcamp Demo

This track is used when you first meet Toriel. The Bandcamp version is a slowed down, lower-pitched version of the demo's version in the files, which in turn is slowed down, and lower-pitched ingame.

(Source: tobyfox.bandcamp.com)

Hotel Battle Music Prerelease Name

The song on the OST Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything was named Hey This Wasn't Really What I Was Expecting From a Hotel, For Example You Didn't Even Leave a Mint on My Pillow when revealed in a Kickstarter update, and has the filename hey_this_wasnt_really_what_i_was_expecting_from_a_hotel_for_example_you_didnt_leave_a_mint_on_my_pillow.mp3 on Toby Fox's website. It was made on October 30th, 2014, at 8:58 AM.

(Source: Kickstarter)

Stronger Monsters WIP

This prototype version of Stronger Monsters is found on Toby's website, as well as in a Kickstarter update. The only major difference seems to be that the end is shorter. It was made on December 18th, 2014, at 8:16 AM.

Compare the end of this track with the final:

WIP loop/end of Stronger Monsters Final loop/end of Stronger Monsters

Unreleased Music

Various unreleased music tracks were posted to the Undertale Tumblr on the day before the game's 1-year anniversary.

Early Alphys

A calmer, less quirky-sounding version of Alphys's theme. It was rewritten for the final version because Toby felt it was too similar to "a certain lab song from another game".

(Source: Toby Fox)

Early Spear of Justice

An early version of Undyne's battle theme. Although the melody is mostly the same, it has a considerably more melancholy and less aggressive tone compared to the final version due to being written before Toby "really knew Undyne’s personality".

(Source: Toby Fox)

Early Undertale

An early take on the eponymous song. Compared to the final version, this is less bittersweet-sounding and is played in a minor key. Toby was inspired to change the guitar backing to a new melody (which itself served as the basis for Memory and His Theme) after "hearing a certain song".

(Source: Toby Fox)

Dog Hole

Definitely meant to be an area theme, but it doesn't sound quite like anything else on the soundtrack. Maybe that's why it was scrapped...?

(Source: Toby Fox)


Dogsong arranged as a parody of the Metroid ending theme. Apparently, if you completed the game quickly enough, you would have gotten an image of the Annoying Dog in a bikini as a "reward":


(Source: Toby Fox)
(Source: @tobyfox)

Concept Art



Concept art for what appears to be an early version of Papyrus (based on the pose). According to Toby, the gray pixels are a result of resizing in Microsoft Paint, so this may not be what the original version actually looked like.

(Source: @tobyfox)



Concept art for Grillby with commentary.

(Source: @tobyfox)


Why do I look so....so.....BEAUTIFUL, little buddy?

Concept art for Burgerpants with some... colorful commentary. According to Toby, Burgerpants is the only character whose final design matches the concept art 1:1.

(Source: @tobyfox)


Apparently "cyan" is another word for "brown". Who knew?

Concept art for the marsh with some some choice words for cyan-lovers. The final version of this area has cyan water anyway.

(Source: @tobyfox)



According to Toby, this is concept art for Toriel.

(Source: @tobyfox)